منابع مشابه
Control of Unit Power Factor PWM Rectifier
To solve the problem of harmonic pollution to the power grid that caused by traditional diode rectifier and phase controlled rectifier, the unit power factor PWM rectifier is designed. The topology structure of the rectifier circuit is introduced and the double closed-loop control strategy in three-phase stationary coordinate system is analyzed. For the deficiency of control strategy, the contr...
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Abstract This paper analyzes the principle of PWM rectifier and presents a unity power factor control method of PWM rectifier. Controller used double closed-loop PI control, which inner uses three-phase input current control method controlled by unity power factor and outer controls the output DC voltage of rectifier. Voltage phase detection methods which proposed could eliminate the affection ...
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This paper presents a novel single-phase high power factor PWM boost rectifier, featuring soft commutation of the active switches at zero-current (ZCS). It incorporates the most desirable properties of the conventional PWM and the softswitching resonant techniques. The input current shaping is achieved with average current mode control, and continuous inductor current mode. This new PWM convert...
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Major constraints while using motor drive system are efficiency and cost. Commutation in the conventional DC motors is carried out by commutator which is rotating part placed on the rotor and brushes. Due to these mechanical parts, conventional DC motor consist high amount of losses. Brushless DC (BLDC) Motors are very extensively used motors these days because of its advantages over convention...
متن کاملPwm Recifier with Power Factor Control
A three-phase space-vector based PWM rectifier with power factor control has been proposed in this paper. The three-phase phase locked loop (PLL) is designed to detect the phase angle of utility voltage, which is used to create three-phase reference currents. The proposed scheme is simple and practical to be implemented on a fixed-point digital signal process based controller. It also does not ...
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ژورنال
عنوان ژورنال: Energy and Power Engineering
سال: 2013
ISSN: 1949-243X,1947-3818
DOI: 10.4236/epe.2013.54b023